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Efficacy of BCG in protecting against bTB
| Vaccinated group (23) | Control group (26) | Attack rate in vaccinated calves | Attack rate in control in calves | Efficacy | |||
|---|---|---|---|---|---|---|---|
| Positive | Negative | Positive | Negative | ||||
| Gross pathology | 15 | 8 | 22 | 4 | 65% | 85% | 23% |
| Culture | 14 | 9 | 22 | 4 | 61% | 85% | 28% |
| Histopathology | 13 | 10 | 22 | 4 | 57% | 85% | 33% |
